Guide

Universal fan control module teardown – with schematic

Universal fan control module teardown – with schematic

#Universal #fan #control #module #teardown #schematic

“bigclivedotcom”

A look at a generic Chinese controller for repairing air conditioner units (not the compressor type).
This universal module can control three-speed fans, and two extra loads like a swivel motor and pump for an evaporative cooler.
It’s functionally very similar to the PCB in a Hepa air filter…

source

 

To see the full content, share this page by clicking one of the buttons below

Related Articles

32 Comments

  1. Interesting to note that the buzzer takes on a more "pulsed" sound when more LEDs on the control panel are lit, somewhere there's a component that's struggling to supply enough current! When I've used units similar in actual fans I always assumed it was the beating of the blades making the buzzer sound funny, not the multiplexing of the LEDs!

  2. I have a fan, that recently decided it was going to start changing functions without a button press. Thanks to this channel, I was confident in ripping out the speaker that beeped every time it changed (it was literally every few seconds) i then also completely disconnected the wires from the circut board to the tilt motor. It now no longer moves automatically, but it functions as a fan on low, medium and high as it should. (And every few seconds thinks it's tilt is being turned on by an unknown source. Still no idea why)

  3. I tried a $10 ups from overseas and the capacitors popped. That thing was built poor especially since it overheated and I also notice their positive and negative wire coloring was in reverse. Says it will power cable modems, etc up to 6v which doesn't last too long.

  4. When the "Mode" thing was enabled I was wondering why they'd have that, but seeing some other comments, it's a feature to create a natural-feeling breeze apparently, which actually seems like a smart idea, although could be annoying if I hooked one up to my wall fan that sounds like a damned aeroplane prop when run at full tilt (I currently have it on my stepdown transformer and on Low to keep it quiet!), though said fan does have a big IR window on it which would lead me to believe there is a more money model that actually did have remote controlled functions (or is just a place to hide a naughty voyeur cam)… 😛

  5. After watching this video and reading the comments, I can see me using something like this to control a bunch of stuff here. I need a remote for an infrared heat lamp in the bathroom. Being able to turn it on and off while wet with a remote would be heaven!. We always swap those horrible LED lights for halogens when we move in. Also, we have shittee baseboard heaters which I can't tolerate since they take forever to heat up and forever to cool down.
    We also have a nice in the wall "space heater" that has a useless thermostat (37 minutes to shut off). Having a remote to change it on or off from bed or the couch is something I was already planning.

  6. I think they include a classic water level switch with faston terminals because many OEM switches now use tiny connectors with random pinouts and some are even low voltage DC.

  7. 6:42 – Somebody in China's getting fired. I do this trick sometimes, but you can stick the zener there, so it not only limits the voltage to 5V, in one side, and pass the unused half of the AC, allowing the capacitor dropper to work. Saves one part, and the labor to install it. Use a 5.6V zener, instead of 5.1V, to account for that one diode's drop.

  8. 0:00: 🔧 Teardown of a universal fan control module with schematic
    3:36: 🔍 Teardown reveals power supply components and circuit board details.
    7:04: ⚙️ Teardown of a universal fan control module with schematic explanation.
    10:30: 🔧 Teardown of a universal fan control module with schematic
    15:09: 🔧 Analysis of fan control module behavior and voltage drop during testing.
    Recapped using Tammy AI

  9. Awesome find. Here in Australia remote control fans are no longer available. A few years ago most fans were remote but not now. This module has the potential to be a simple inline unit for non remote fans.

  10. Clive, the IC that multiplexes the buttons and LEDs is probably the HT1668/TM1668, a 'jellybean' IC. I have that very chip in my air conditioner. They're also found in induction hobs and heaven knows what else!

  11. Having seen this unit on the Patreon stream I thought it would be useful, modified, to control a fan/light I had seen where the remote control was missing.
    Unfortunately when the fan/light unit arrived I found that not only was the remote control missing, it seems that the light panel has also been removed along with the wiring for it and the power supply for the fan. The seller is going to search for the missing parts but I suspect that his source had removed the missing parts. I'm expecting I will get a refund from ebay.

Leave a Reply